Thanks guys for your kind words and good advices !!!
@chriswhatelse - References are sure probably needed for my humans...but about those robots that's not easy to find (the good) reference...especially when they are selfmade ^^' (and terrible probably haha).
@Firathion - Sure I look at a lot of awesome artists (streaming etc...), and I will keep an eye on Anthony Jones then ^^
I heard about the sculptor part with Sinix too...and I always have some troubles about it (thinking in 3D, it's always hard for me)...but with time and focused work this should work better and better.
The other reason why my edges are bad is also probably because I use too much layers (even if I try to reduce them)...one of a good remark from Marc (Brunet and others certainly as well) is to only keep one layer...but it's hard to do that, at least for my skill level.
It also create some cool "ghost" colours (I really like that !).
But well, again I think I should not break the steps and keep going slowly (or else we try everything but never can (really) success at one thing ^^').
Oh and just a little question but...do I really have one style ?
I always feel I jump from one to another ^^' (for the best or worst).
Again, thanks a lot for the support !